Fontmatrix is a font manager for Linux

Linux

Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

 desktop

Desktop environment

In graphical computing, a desktop environment commonly refers to a style of graphical user interface derived from the desktop metaphor that is seen on most modern personal computers. These GUIs help the user in easily accessing, configuring, and modifying many important and frequently accessed...

s. It can manage fonts installed system-wide or for individual user accounts. It relies on FreeType

FreeType

FreeType is a software library written in C that implements a font rasterization engine. It is used to render text on to bitmaps and provides support for other font-related operations.-Details:...

 to render font samples, and on Qt for its user interface. Bruce Byfield

Bruce Byfield

Bruce Byfield is a journalist who specializes in writing about free and open source software. He has been a contributing editor at , and his articles have appeared on the Datamation, LWN, Linux Developer Network, and LinuxPlanet sites...

 hailed the creation of Fontmatrix with an article concluding with: "Finally, the long wait for a GNU/Linux font manager is ending."

Fontmatrix lets the user label a font with multiple tags (similar to Gmail

Gmail

Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well via POP3 or IMAP protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007, though...

 labels), which may be activated or deactivated as sets. It also allows the user to toggle features of OpenType

OpenType

OpenType is a format for scalable computer fonts. It was built on its predecessor TrueType, retaining TrueType's basic structure and adding many intricate data structures for prescribing typographic behavior...

 fonts for testing purposes. As of November 2008, the PANOSE

PANOSE

The PANOSE System is a method for classifying typefaces solely on their visual characteristics, developed by Benjamin Bauermeister. It can be used to identify an unknown font from a sample image or to match a known font to its closest visual neighbor from a font pool...

 classification present in fonts may also be used to select them by similarity. Fontmatrix is included in Debian

Debian

Debian is a computer operating system composed of software packages released as free and open source software primarily under the GNU General Public License along with other free software licenses. Debian GNU/Linux, which includes the GNU OS tools and Linux kernel, is a popular and influential...

, Ubuntu

Ubuntu (operating system)

Ubuntu is a computer operating system based on the Debian Linux distribution and distributed as free and open source software. It is named after the Southern African philosophy of Ubuntu...

, and Fedora Linux

Fedora (operating system)

Fedora is a RPM-based, general purpose collection of software, including an operating system based on the Linux kernel, developed by the community-supported Fedora Project and sponsored by Red Hat...

.